Contents
How to open MODIS data in HDF4 format?
To begin, import your packages. Downloading from https://ndownloader.figshare.com/files/10960112 Extracted output to /root/earth-analytics/data/cold-springs-modis-h4/. In the previous lesson, you learned about the HDF4 file format, which is a common format used to store MODIS remote sensing data.
How to read MODIS data in open source Python?
Read MODIS data in HDF4 format into Python using open source packages ( xarray ). Extract metadata from HDF4 files. Plot data extracted from HDF4 files. In this lesson, you will learn how to open a MODIS HDF4 format file using xarray.
How to open a HDF4 file in Python?
Open HDF4 Files Using Open Source Python and Xarray. HDF files are hierarchical and self describing (the metadata is contained within the data). Because the data are hierarchical, you will have to loop through the main dataset and the subdatasets nested within the main dataset to access the reflectance data (the bands) and the qa layers.
Why are HDF files hierarchical and self describing?
HDF files are hierarchical and self describing (the metadata is contained within the data). Because the data are hierarchical, you will have to loop through the main dataset and the subdatasets nested within the main dataset to access the reflectance data (the bands) and the qa layers.
How to open remote sensing data in HDF4 format?
In this lesson, you will learn how to open and process remote sensing data stored in HDF4 format. You can use rioxarray to open HDF4 data. Note that both tools wrap around gdal and will make the code needed to open your HDF4 data, simpler. To begin, create a path to your HDF4 file.
How many bands does the MODIS satellite collect?
Where Landsat 8 collects 11 bands of data, the MODIS satellites collect 36. Due to the large number of bands, much of the MODIS data that is available for download is pre-processed heavily to make it more easily accessible.
What kind of metadata does a MODIS file have?
MODIS products have two sources of metadata: the embedded HDF metadata, and the external ECS metadata. The HDF metadata contains valuable information including global attributes and dataset specific attributes pertaining to the granule. The structure of this metadata is broadly similar to that of an ASTER HDF file.
How to find MODIS data in Earth Explorer?
Select the zip file above as the shapefile that represents the SPATIAL EXTENT of your study area. At the bottom of the search criteria window, select a range of dates.